Pfizer Ltd (Parke-Davis)

Pfizer is ranking number one in sales in the world. It was founded in 1849 and its headquarters is in New York, United States, with its research headquarters in Groton,Connecticut.Some of the brand names include Lipitor, Chantix/Champix, Viagra, among many others.

Pfizer is named after German-American cousins Charles Pfizer and Charles Erhardt in 1849. They started their business with an antiparasitic called santonin, This was an immediate success.Although it was the production of citric acid that really kick-started Pfizer's growth in the 1880s.

By 1910, sales totaled nearly $3 million, and Pfizer became established as an expert in fermentation technology. These skills were applied to the mass production of penicillin during World War II, in response to an appeal from the US government. The antibiotic was urgently needed to treat injured Allied soldiers, and it soon became known as "the miracle drug". In fact, most of the penicillin that went ashore with the troops on D-Day was made by Pfizer.

In 1950, Pfizer was established in Iran, Belgium, Brazil, Canada, Cuba, Mexico, Panama, Puerto Rico and the United Kingdom.In 2007, Pfizer has launched a television advertising to announce an Anti-Smoking pill, Champix

Pfizer has made numerous acquisitions, including of Warner–Lambert in 2000, Pharmacia in 2003 ,Wyeth in 2009 ,king pharmaceuticals in 2010 and In 2012 Alacer Corp.